/*
GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org
This file is part of GeoGebra.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation.
*/
package org.geogebra.common.kernel.statistics;
import org.apache.commons.math3.distribution.HypergeometricDistribution;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.commands.Commands;
import org.geogebra.common.kernel.geos.GeoNumberValue;
/**
*
* @author Michael Borcherds
*/
public class AlgoInverseHyperGeometric extends AlgoDistribution {
/**
* @param cons
* construction
* @param label
* label for output
* @param a
* population size
* @param b
* number of successes
* @param c
* sample size
* @param d
* variable value
*/
public AlgoInverseHyperGeometric(Construction cons, String label,
GeoNumberValue a, GeoNumberValue b, GeoNumberValue c,
GeoNumberValue d) {
super(cons, label, a, b, c, d);
}
@Override
public Commands getClassName() {
return Commands.InverseHyperGeometric;
}
@Override
public final void compute() {
if (input[0].isDefined() && input[1].isDefined()
&& input[2].isDefined()) {
int param = (int) Math.round(a.getDouble());
int param2 = (int) Math.round(b.getDouble());
int param3 = (int) Math.round(c.getDouble());
double val = d.getDouble();
try {
HypergeometricDistribution dist = getHypergeometricDistribution(
param, param2, param3);
num.setValue(dist.inverseCumulativeProbability(val) + 1); // P(T
// <=
// val)
} catch (Exception e) {
num.setUndefined();
}
} else {
num.setUndefined();
}
}
}